Water drainage system for a field having a water impermeable...

Details Water drainage system for a field having a water impermeable... Water drainage system for a field having a water impermeable...

2009-07-02

2010-10-12

Kreck, John (Department: 3672)

Hydraulic and earth engineering

Drainage or irrigation

Porous or apertured pipe, flume, or tileway

Reexamination Certificate

active

07811030

ABSTRACT:
The tubular element is made with a sleeve formed of a spun bonded polyester material that allows the passage of water and prevents the passage of soil when used for a drainage element. The tubular element is made with small diameters that allows the element to be coiled about a three-dimensional object when used as a cushioning device.

REFERENCES:
patent: 3060693 (1962-10-01), Taylor
patent: 3396541 (1968-08-01), Lamberton
patent: 4881846 (1989-11-01), Burkstaller
patent: 5015123 (1991-05-01), Houck et al.
patent: 6461078 (2002-10-01), Presby
patent: 6679653 (2004-01-01), DiTullio
patent: 2003/0228194 (2003-12-01), Ring et al.
patent: 2004/0057797 (2004-03-01), Ring
patent: 04198513 (1992-07-01), None

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